Odpowiedzi

2010-03-10T20:46:52+01:00
A) 1/2x-3/4[x-(4x+1)]+1-x=1/4
2/4x-3/4(x-4x-1)+1-x=1/4
2/4x-3/4x+3x+3/4+1-x=1/4
7/4x=-6/4
x=-6/7



b)2/3(3x-1)-3/2[2x+3(x-2)]=1
2x-2/3-3x-9/2x+3=1
-11/2x=-8/3
x=33/16

2 3 2